Medium frequency furnace ramming materials produced by Anetjer are widely used in coreless medium frequency furnace and cored induction furnace, as medium frequency furnace ramming materials to melt gray cast iron, ductile cast iron, calcined cast iron, vermicular cast iron and cast iron alloys, melting carbon steel, alloy steel, high manganese steel, tool steel, heat-resistant steel, stainless steel, melting aluminum and its alloys, melting copper, brass, white copper and bronze and other copper alloys. Quartz sand is used as the main raw material, and the particles are prepared with dry materials and mixed evenly. The drying and sintering cycle is shortened. Users can directly build the furnace without stirring. Product advantages: no slag, no crack, no moisture failure, repair furnace is convenient, and corrosion resistance, is able to improve the furnace life, significantly improve economic benefits. ZG1 type material is used for smelting plain steel, 45# steel, high gong steel, high manganese steel, special steel and a series of metal materials. The use of the furnace can reach more than 120 times, up to 195 times. ZH2 type material is used for melting gray iron, which can be used for more than 300 furnaces and up to 550 furnaces.

The same use of furnace lining has different requirements for refractory materials. Only the use of ramming materials that meet the smelting conditions can work effectively.

1. The performance requirements of induction furnace for mud refractories

Furnace lining refractory materials should meet certain conditions to cope with the harsh working environment of the furnace lining.

The fire resistance of steel refractories should be the fire resistance of steel ≥1700℃, and the fire resistance of melted cast iron refractories should be the fire resistance of cast iron refractories ≥1500℃. Refractories have good high temperature stability. Strong corrosion resistance, small alkalinity difference with slag; There is a certain strength at room temperature and high temperature; Low resistance; Good insulation, small resistivity. The lining material should avoid the introduction of ferromagnetic substances, which can significantly reduce the specific resistivity and insulation of the material, and substances that are easy to form a low melting point phase in the raw material can also play a similar role. The lining material has good thermal insulation performance, and the refractory material used should be economical and environmentally friendly.

2. The role of each ingredient

The ramming material is made of refractory aggregate. Refractory powder. Consists of several parts, such as additives. Irregular aggregate particles facilitate interpenetration between particles. Bite and pin can improve the combination strength. After the combustion of refractory aggregate, the skeleton of the material can be formed to improve the thermal stability of the material. The intensity. Refractory powder has a certain fluidity, can fill the material gap, improve the bulk density of the material, improve the construction performance. At the same time, the activity of fine powder is stronger than that of aggregate particles, and it can preferentially react with additives in the material to improve the strength of the material or improve other properties of the material. For irregular refractories, the density of the continuous particle level pairing material between the refractory aggregate and the powder has a great influence on the bulk density of the material. Porosity. Strength and slag resistance.

The role of the adhesive is to bond irregular refractory materials at room temperature or a certain temperature, with a certain shape and strength. Adhesives need to have a large surface contact with refractory aggregate and refractory powder, and ensure good volume stability of the material.

Ramming materials can be classified as acidic. Alkaline and neutral three, these three ramming materials have advantages and disadvantages.